So lemme just say... If you are a FTM with a colicky baby that doesn't let you put them down.. I advise you to buy this Serta perfect sleeper.. My son has been sleeping on my chest for 3 WEEKS...my back hates me... We were out of options he doesn't like laying flat on his back...we bought this and he sleeps in it every night between me and my husband. It's got heightened walls to prevent injury..an infant insert to help baby be comfortable.. The back reclines to lay flat all the way to sitting up.. And it's I comfort technology to make baby feel warm and safe... The last 2 nights have been amazing. He only wakes to eat and be changed and then falls right back asleep in it.. He also loves just sitting in it ant watching mommy.